Y. Henderson and H. W. Haggard 341 
Experiment 4.—Dog, male, 9 kilos. Morphine administration. Con- 
ditions as in Experiment 3. Equilibrating air 5.7 per cent COs. 
Blood CO. 
Time. Condition. es oe 
if Content. | Capacity. Ture. * 
per cent |vol. per cent|vol. per cent oO 
11.30 a.m. Normal.. 5.4 |°. 49 50 39.7 
bd dees Fpl Morphine, 0.16 gm. 
Retowe 5.9 57 54 
IZA * 6.0 60 56 38.8 
1.20 p.m. 6.3 62 59 
2.00 “ 6.7 64 59 
2.40 <“ 6.6 63 60 38 .6 
Experiment 5.—Dog, male, 12 kilos. Morphine administration. Con- 
ditions as in Experiment 3. Equilibrating air 5.5 per cent CO. 
f Blood CO:z. 
Rectal 
Time. Condition. Se yey iee 
Content. | Capacity. ture. 
10.15 a.m. Normal. 5.3 50 51 39.6 
10.207) 5 Morphine, 0.24 gm. 
1050 wine 6.0 56 54 
11.35 “ 6.6 64 58 38.4 
12.30 “ 63 60 
1.30 p.m. Gay, 65 59 
3,004) °* Very quiet. 70 64 
Experiment 6.—Dog, male, 10 kilos. Morphine administration. Con- 
ditions as in Experiment 3. Equilibrating air 5.4 per cent COd. 
Blood COs. 
Time. Condition. cai eoe ater! 
7 Content. | Capacity. ture. 
per cent |vol. per cent|vol. per cent SOs 
10.00 a.m. Normal. . 5.4 49 49 39.8 
10.80 “‘ Morphine, 0.16 gm. 
Mio. 54 48 
2.004" 5.8 56 52 39.0 
1.15 p.m. | 60 56 
2100—-3* 6.1 63 58 
3.00 | 64 58 
4.00 ‘‘ 62 59 08.8 
